Correcting jig for injection molded part

By designing a straightening groove with continuously varying curvature and a straightening fixture combining air-cooling and water-cooling technologies, the problem of deformation after injection molding parts cools has been solved, achieving efficient straightening and rapid cooling, and improving product quality and assembly accuracy.

CN224360545UActive Publication Date: 2026-06-16DONGGUAN HONGSHENG RUBBER PROD CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
DONGGUAN HONGSHENG RUBBER PROD CO LTD
Filing Date
2025-06-20
Publication Date
2026-06-16

AI Technical Summary

⚠Technical Problem

After injection molded products cool, uneven wall thickness or different cooling rates can cause inconsistent shrinkage in local areas, resulting in sudden curvature changes and bending deformation, which affects production quality and assembly accuracy.

⚗Method used

A straightening fixture is used, and an arc-shaped surface straightening groove with continuously changing curvature is designed. A closed straightening space is formed by the movement of the mold base. Combined with air cooling and water cooling technology, the deformation of injection molded parts is quickly straightened. The deformation is compensated by reverse curvature, and the cooling time is shortened.

🎯Benefits of technology

It enables efficient straightening and rapid cooling of injection molded parts, improving product yield and assembly accuracy, and reducing production costs.

✦ Generated by Eureka AI based on patent content.

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Abstract

The application relates to the field of forming piece correction technology, in particular to a correction jig for injection molded pieces, which comprises a first mold base provided with a first correction groove; a second mold base oppositely arranged with the first mold base, the second mold base being provided with a second correction groove, the first correction groove and the second correction groove being matched to form a closed correction space, the correction space being matched with the drawing size of the injection molded piece; and a connecting structure for fixedly connecting the first mold base and an external driving device respectively, and driving the first mold base to move towards or away from the second mold base under the driving of the driving device. The inner wall of the correction groove is designed as a continuous curved surface which is opposite to the curvature trend of the deformation part of the injection molded piece, and the bending deformation caused by cooling shrinkage is offset through mechanical compensation; the organic combination of the correction mold and the cooling mold group realizes efficient correction, rapid cooling and low-cost production of the deformation of the injection molded piece, and comprehensively improves the product yield and assembly precision.
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